/* ══════════════════════════════════════════════════════════════════════
   Tao Baryon — GDD Page Styles
   Full GDD document rendering, sidebar, search, markdown
   ══════════════════════════════════════════════════════════════════════ */

/* ── GDD Page Layout ──────────────────────────────────────────────────── */
.gdd-page-wrap {
  min-height: 100vh;
  padding-top: 80px;
}

.gdd-page-header {
  padding: 48px 80px 32px;
  border-bottom: 1px solid var(--border);
  max-width: 1400px;
  margin: 0 auto;
}
.gdd-page-header h1 {
  font-family: var(--mono);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 500;
  letter-spacing: .04em;
  margin-bottom: 8px;
}
.gdd-page-header h1 .lime { color: var(--lime); }
.gdd-page-header p {
  font-size: 15px;
  color: var(--txt2);
  max-width: 600px;
}

/* ── Search bar ───────────────────────────────────────────────────────── */
.gdd-search-wrap {
  margin-top: 20px;
  position: relative;
  max-width: 400px;
}
.gdd-search {
  width: 100%;
  padding: 10px 16px 10px 36px;
  background: rgba(28,32,48,0.5);
  border: 1px solid var(--border);
  color: var(--txt);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .08em;
  outline: none;
  transition: border-color .15s;
}
.gdd-search::placeholder { color: var(--txt3); }
.gdd-search:focus { border-color: var(--lime); }
.gdd-search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--txt3);
  font-size: 14px;
  pointer-events: none;
}

/* ── GDD page grid ────────────────────────────────────────────────────── */
.gdd-page-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 48px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 32px 80px 80px;
  align-items: start;
}

/* ── Sidebar ──────────────────────────────────────────────────────────── */
.gdd-page-sidebar {
  position: sticky;
  top: 80px;
  border: 1px solid var(--border);
  background: rgba(18,21,28,0.6);
  padding: 20px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
}
.gdd-page-sidebar::-webkit-scrollbar {
  width: 4px;
}
.gdd-page-sidebar::-webkit-scrollbar-track {
  background: transparent;
}
.gdd-page-sidebar::-webkit-scrollbar-thumb {
  background: var(--border);
}

.gdd-sidebar-title {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .4em;
  color: var(--txt3);
  margin-bottom: 16px;
  text-transform: uppercase;
}

.gdd-sidebar-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.gdd-sidebar-list a {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .10em;
  color: var(--txt2);
  text-decoration: none;
  padding: 6px 10px;
  display: block;
  transition: color .15s, background .15s;
  border-left: 2px solid transparent;
}
.gdd-sidebar-list a:hover {
  color: var(--lime);
  background: rgba(200,245,66,0.03);
}
.gdd-sidebar-list a.active {
  color: var(--lime);
  border-left-color: var(--lime);
  background: rgba(200,245,66,0.05);
}
.gdd-sidebar-list .sidebar-num {
  color: var(--txt3);
  margin-right: 8px;
  font-size: 10px;
}
.gdd-sidebar-list .hidden { display: none; }

/* ── Back to main site link ───────────────────────────────────────────── */
.gdd-back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--txt3);
  text-decoration: none;
  margin-bottom: 20px;
  transition: color .15s;
}
.gdd-back-link:hover { color: var(--lime); }

/* ── GDD Index Cards ──────────────────────────────────────────────────── */
.gdd-index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}
.gdd-index-card {
  padding: 20px 24px;
  border: 1px solid var(--border);
  background: rgba(28,32,48,0.3);
  text-decoration: none;
  display: block;
  transition: border-color .15s, background .15s;
}
.gdd-index-card:hover {
  border-color: var(--lime);
  background: rgba(28,32,48,0.5);
}
.gdd-index-card .card-num {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .28em;
  color: var(--lime);
  margin-bottom: 8px;
}
.gdd-index-card .card-title {
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .1em;
  color: var(--txt);
  margin-bottom: 6px;
}
.gdd-index-card .card-excerpt {
  font-size: 13px;
  color: var(--txt2);
  line-height: 1.5;
}
.gdd-index-card.hidden { display: none; }

/* ── Markdown Rendered Content ────────────────────────────────────────── */
.gdd-md-content {
  max-width: 860px;
}

.gdd-md-content h1 {
  font-family: var(--mono);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--txt);
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.gdd-md-content h2 {
  font-family: var(--mono);
  font-size: clamp(18px, 2.5vw, 24px);
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--lime);
  margin-top: 48px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(200,245,66,0.15);
}

.gdd-md-content h3 {
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: .1em;
  color: var(--txt);
  margin-top: 32px;
  margin-bottom: 12px;
}

.gdd-md-content h4 {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .18em;
  color: var(--lime);
  margin-top: 24px;
  margin-bottom: 8px;
}

.gdd-md-content h5,
.gdd-md-content h6 {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .14em;
  color: var(--txt2);
  margin-top: 20px;
  margin-bottom: 8px;
}

.gdd-md-content p {
  font-size: 15px;
  color: var(--txt2);
  line-height: 1.75;
  margin-bottom: 16px;
}

.gdd-md-content strong { color: var(--txt); }
.gdd-md-content em { color: var(--lime); font-style: italic; }

.gdd-md-content a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(66,165,245,0.3);
  transition: border-color .15s;
}
.gdd-md-content a:hover { border-color: var(--blue); }

.gdd-md-content ul,
.gdd-md-content ol {
  padding-left: 0;
  margin-bottom: 16px;
}
.gdd-md-content ul { list-style: none; }
.gdd-md-content ol { list-style: none; counter-reset: ol-counter; }

.gdd-md-content ul li,
.gdd-md-content ol li {
  font-size: 15px;
  color: var(--txt2);
  line-height: 1.7;
  padding: 4px 0 4px 24px;
  position: relative;
}

.gdd-md-content ul li::before {
  content: '\2014';
  position: absolute;
  left: 0;
  color: var(--txt3);
}
.gdd-md-content ol li::before {
  counter-increment: ol-counter;
  content: counter(ol-counter) '.';
  position: absolute;
  left: 0;
  color: var(--lime);
  font-family: var(--mono);
  font-size: 12px;
}
.gdd-md-content ul li strong,
.gdd-md-content ol li strong { color: var(--txt); }

.gdd-md-content blockquote {
  padding: 16px 20px;
  margin: 16px 0;
  background: rgba(200,245,66,0.04);
  border-left: 2px solid var(--lime);
  font-style: italic;
}
.gdd-md-content blockquote p {
  color: var(--txt2);
  margin-bottom: 0;
}
.gdd-md-content blockquote p:last-child { margin-bottom: 0; }

.gdd-md-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 32px 0;
}

/* Tables */
.gdd-md-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 13px;
  overflow-x: auto;
  display: block;
}
.gdd-md-content thead { border-bottom: 2px solid var(--border); }
.gdd-md-content th {
  text-align: left;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .22em;
  color: var(--txt3);
  padding: 10px 14px;
  background: rgba(28,32,48,0.3);
  white-space: nowrap;
}
.gdd-md-content td {
  padding: 10px 14px;
  color: var(--txt2);
  border-bottom: 1px solid rgba(45,51,72,0.5);
  font-size: 13px;
}
.gdd-md-content td:first-child {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--txt);
  white-space: nowrap;
}

/* Code blocks */
.gdd-md-content code {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--lime);
  background: rgba(200,245,66,0.06);
  padding: 2px 6px;
  border: 1px solid rgba(200,245,66,0.1);
}
.gdd-md-content pre {
  background: rgba(10,12,16,0.8);
  border: 1px solid var(--border);
  padding: 20px;
  margin: 16px 0;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.6;
}
.gdd-md-content pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--txt2);
}

/* ── GDD Document Navigation (prev/next) ─────────────────────────────── */
.gdd-doc-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.gdd-doc-nav a {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--txt2);
  text-decoration: none;
  padding: 10px 16px;
  border: 1px solid var(--border);
  transition: border-color .15s, color .15s;
}
.gdd-doc-nav a:hover {
  border-color: var(--lime);
  color: var(--lime);
}
.gdd-doc-nav .nav-label {
  font-size: 9px;
  letter-spacing: .32em;
  color: var(--txt3);
  display: block;
  margin-bottom: 4px;
}

/* ── Design Showcase Page ─────────────────────────────────────────────── */
.design-page-wrap {
  min-height: 100vh;
  padding-top: 80px;
}
.design-page-header {
  padding: 48px 80px 32px;
  border-bottom: 1px solid var(--border);
  max-width: 1400px;
  margin: 0 auto;
}
.design-page-header h1 {
  font-family: var(--mono);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 500;
  letter-spacing: .04em;
  margin-bottom: 8px;
}
.design-page-header h1 .lime { color: var(--lime); }
.design-page-header p {
  font-size: 15px;
  color: var(--txt2);
  max-width: 600px;
}

.design-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 24px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 32px 80px 80px;
}
.design-card {
  border: 1px solid var(--border);
  background: rgba(28,32,48,0.3);
  overflow: hidden;
  transition: border-color .15s;
}
.design-card:hover { border-color: rgba(200,245,66,0.3); }
.design-card-preview {
  height: 240px;
  background: #080a0f;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.design-card-preview iframe {
  width: 200%;
  height: 200%;
  transform: scale(0.5);
  transform-origin: top left;
  border: none;
  pointer-events: none;
}
.design-card-info {
  padding: 20px;
}
.design-card-title {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .14em;
  color: var(--txt);
  margin-bottom: 6px;
}
.design-card-desc {
  font-size: 13px;
  color: var(--txt2);
  line-height: 1.5;
  margin-bottom: 12px;
}
.design-card-actions {
  display: flex; gap: 12px;
}
.design-card-actions a {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .18em;
  color: var(--txt3);
  text-decoration: none;
  padding: 6px 12px;
  border: 1px solid var(--border);
  transition: border-color .15s, color .15s;
}
.design-card-actions a:hover {
  border-color: var(--lime);
  color: var(--lime);
}

/* Fullscreen overlay */
.design-fullscreen {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(10,12,16,0.97);
  display: none;
  flex-direction: column;
}
.design-fullscreen.active { display: flex; }
.design-fullscreen-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 24px;
  border-bottom: 1px solid var(--border);
}
.design-fullscreen-bar .title {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--txt2);
}
.design-fullscreen-close {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--txt3);
  background: none;
  border: 1px solid var(--border);
  padding: 6px 14px;
  cursor: pointer;
  letter-spacing: .14em;
  transition: color .15s, border-color .15s;
}
.design-fullscreen-close:hover {
  color: var(--lime);
  border-color: var(--lime);
}
.design-fullscreen iframe {
  flex: 1;
  width: 100%;
  border: none;
}

/* ── GDD page responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
  .gdd-page-header { padding: 32px 24px 24px; }
  .gdd-page-layout { grid-template-columns: 1fr; padding: 24px; }
  .gdd-page-sidebar { position: static; max-height: none; }
  .design-grid { grid-template-columns: 1fr; padding: 24px; }
  .design-page-header { padding: 32px 24px 24px; }
  .gdd-doc-nav { flex-direction: column; }
}